Machine for winding condensers



Nov. 23 1926. 1,608,179

L. J. MARCHAND MACHINE FOR WINDING CONDENSERS Filed Nov. 2, 1925 5 Sheets-Sheet 1 Lcula, 4).mrdaand I Chroma Ndv. 23, 1926.

L. J. MARCHAND MACHINE FOR Wi NDING CONDENSERS Filed Nov. 2, 1,925 3Sheets-Sheet 2 L. J. MARCHAND MACHINE F OR WINDING- CONDENSERS Nov. 23 1926.

Filed Nov. 2 1.925 3 Sheets-Sheet 5 'menl'ov, Louw Navokomd @bbomqu I I/II/I/II/l/ I I Patented Nov. 23, 192 6.

UNITED STATES PATENT oer-"res.

LOUIS J. MARCHANI), OF ROCHESTER, NEW YORK, ASSIGNOR TO IGBAD CONDENSER & MANUFACTURING CO. INC., OF ROCHESTER, NEW YORK, A CORPORATION OF NEW YORK.

MACHINE FOR WINDING CONDENSERS.

Application filed November 2, 1925. Serial No. 66,411.

The object of this invention is to provide a new and useful machine for winding. fixed electric condensers. Another object of the machine is to permit it to operate in feeding or drawing several webs of material that are all used in forming the condenser so that a uniform tension is kept thereon and so that they are fed as nearly uniformly 1n speed as possible. Another object is to wind the condenser so that it is formed originally almost flat and so that when it is finished and withdrawn from the mandrel it is nearly in its final shape so that it can be flattened out to its final shape with little or no disturbance to its layers. .-Another object is to provide a flattened mandrel or form on which the condenseris wound and from which it can be easily taken off.

These and-other objects of the invention will be illustrated in the'drawings, described in the specification and pointed out 1n the claims at the end thereof.

In the drawings: Figure 1 is a sideelevation of my 1mproved machine.

Figure 2 is an enlarged detailed view of the winding and take-up mechanism.

Figure 3 is a top plan view of the mechanism shown in the lower part of Figure 2.

Figure 4is an end elevation of the mechanism shown inFigure 2 as viewed from the left of that figure. It is also an enlargement of the upper righthand corner of Figure 1.

Figure 5 is a detailed view of the modified form of. the mandrel.

In the several figures of the drawings like reference numerals indicate like parts.

In the drawings reference numeral 1 indicates the table on which the machine is mounted. 2 indicates the electric motor by which the machine is driven. This motor is mounted on a shelf or platform 3 fastened on the table legs. The motor drives the belt 5 which in turn drives the pulley 6 which is mounted to rotate .on a shaft 7. On this shaft is mounted a friction wheel 8 which isdriven thereby. The shaft is mounted in bearings 9 and 10 which are carried by arms 11 and 12 which are integral with hubs 13 and 14 which aremounted to rock on a stud 15. The hub 13 carries a crank 16 to which a rod 17 is connected which extends down to an arm 18 keyed to a shaft 19 on which is keyed a treadle 20. By pressing the treadle 20 the assembly just described is rotated so as .to bring the friction wheel 8 into driving contact with the friction wheel 21. The two hubs 13 and 14 are interlocked with each other as shown in Figure 2 so that they will move positively together and keep in line with each other and so that they can be easily separated to permit the assembling of the parts as shown in Figure 2. The friction wheel 21 is of large diameter as compared with the wheel 8 so that thc'angular velocity of the shaft 22 is reduced thereby as compared with the-"angular velocity of the shaft 7.

bearing 23 forming part of the frame of the machine and on the other end of the hearing this shaft carries a pinion 24 which drives a pinion 25 carried on the shaft 26 which is mounted to rotate in a bearing 27. The block 28 is provided on which is formed the fork 29. This block is attached to the left hand end of the shaft 26. For this purpose the shaft is made hollow and a bolt 95 passes through the shaft and is threaded into the block so that the block is rigidly fastened to the shaft and rotates with it as the shaft is turned by the pinion 25. By turning the bolt it can be unscrewed from the block permitting'the ready removal of the block and the mandrel which it carries so that it can be replaced with another mandrel. In the slot of this fork is mounted to swing twoparts 30 and 31 of the mandrel 32. Each of The shaft 22 is mounted torotate in a these pieces 30 and 31 are mounted to swing on bolts which pass through the fork 29. At their outer endthey are connected by the link 33 and when the parts stand in the horizontal position as shown in Figure 2. the two halves of the mandrel-are spaced apart by an eighth of an inch or more. This link is inclined about 18 degrees to the vertical and the pivot points in the block are inclined to the vertical to the same extent. This may be varied within wide limits, the object being to draw the two halves of the mandrel together when the mandrel is raised at one end. One half of the mandrel is provided with a forwardly extending tongue 34.- that engages in a bearing provided in the rack 35. The rack 35 is mounted to slide in a bearing 36 and is moved in and out by a pinion carried on the shaft 37 which shaft is 'The shafts rotate in the bearings. ,A web engage and disengage the mandrel. When the mandrel is in the position as shown in Figure 2 the rack has been moved to the right so as to engage with the end tongue on the mandrel and support it thus furnishing bearing for the outer end thereof. The rack, is held in the position shown in Figure 2 .by a tension spring 39. This spring is stretched when the rack is drawn back to the left and it shortens when the rack is moved to the right and holds the rack in that position so that it will stayin position to furnish a bearing to the tongue 34.

When the rack is moved to the left, the mandrel 32 can; be swung to the dotted line position shown in Figure 2. This will cause the two' halves of the mandrel to collapse or be drawn together so that the width of the mandrel is less and this releases the condenser. that has been wound tight on the mandrel so that it can be easily drawn off oft-he mandrel, after which the mandrel can be returned to the position shown in Figure 2 and the winding of another condenser can be started thereon. To remove the condenser it is nedessary to stop the rotation of the mandrel and,v this is done by the operator raising his foot, from the "treadle' 20." The spring thendraws the link 17' up and causes the friction, wheel .8 to swing l away from the friction wheel 21 so that the wheel 21. is no longerdriven and this mits the mandrel to'come to rest. A iction brake=9 rried on the part 11 engages it against rota a from turning omits axis. soon as the mandrel is adjusted to-wi'nd'fthe next condenser the operator a ain' presses'down on the ,treadle20 and ho ds it"down until the winding is complete, after which the treadle is raised and the condenser is removed and this operation 'is repeated indefinitely.

The condenser formed bytwo strips of tinfoil which are suitably insulated from each other by strips'of paper. The tinfoil 1s carried on rolls 'and 51 and the paper is carried in-the rolls 52, 53,- 54 and 55.

These rolls are mounted onshaftswhich are supported in suitable bearings 56 mounted on either side of the upright I =beam' 57.

of tinfoil is'drawn from the roll 50 and under it are drawn two webs of paper one from each of the rolls 52 and53 and these webs are superimposed or'assembled as they pass over the rollerv or idler 58. In a like manner a web of tinfoil is drawn from the roll 51 and is supportediby two webs of paper drawn from the rolls 54 and 55,all ofwhich webs are assembled as they pass over the roller or idler 59. 'While' two setsof webs are shown in position to, form a con hujs holding the mandrel six webs of'paper may be drawn with the 'two webs of tinfoil and formed into one condenser and provision for extra rolls of paper therefor has been shown on the up' right 57. It will also be understood that thnee'webs of tinfoil may be wound with six webs of paper, thus forming two condensers in one pack. It will also be understood that each web of paper may contain one or more holes,thus making the paper defective as an insulator and to avoid breaking down of the insulation two or threev or more layers may be used together with each web of tinfoil to make the insulation more secure. These two sets of webs are brought together as they pass over the roller or idler which is carried on a shaft 61 mounted torotate between the two arms 62 and 63 which arms at their lower end are keyed to a sleeve 64 which turns on the shaft 65, which shaft is carried in the bracket 66 which is slidably mounted on the upright stem 67 which is supported from a boss forming apart of the bearing 23 or the frame of the machine. It is clamped at any height on the stem by means of the set screw 68. On the sleeve 64 is fastened aboss69 having an arm, 7 0 thereon which is substantially the same as the arm 62 and 63 except that it stands at right angles thereto and forms a bell crank therewith. From this arm extends downwardly a link 71 which en ages with a wrist pin 72. This pin is a justably carried on a 'block or an extension 73 whichis formed on "end-of thisbracket is threaded and a bolt 74engages therewith so that by turning the bolt the bracket mav be moved up or down and it may be positioned on one side or the other of the center and, the degree of its excentricity may be varied as well, so that it will have a longer or shorter throw as may be desired. As this wrist pin rotates with the shaft 22 it will move the link 71 endwise and through the bell crank will cause the roller 60 to swing and either draw 1 relatively wide and thin and is not round 'like'a' spool, but is flat like a plate, and as it rotates it will draw the paper forward rapidly as it passes the horizontal centers andwill draw the paper slowly or not at .all as it passes the verticahcenters. To

avoid jerking of the paper,--betweenthe two extremes of the velocity caused' thereby, the .idler 60 is caused to swing s'o'as to qmpem sate for this unevenmotion and draw the paper with fair uniformity. The wrist pin is set so that the roll 60 moves to the left as V the tionof the mandrel. In this way the paper is fed with fair uniformity and jerking of the pa er is avoided.

On t e end of the shaft 26 a worm is provided which engages with the teeth of ear 81 so that the gear is turned. as the man rel revolves. In frictional engagement with this gear is placed the dial plate 82 so that it revolves'therewith. A gauge. mark is placed on a fixed bracket 83 so that the zero of the dial can be set opposite thereto and as the dial turns it indicatesthe number of rotations that the mandrel has made and the number of layers that have been wound on the condenser. Mounted to rotate with the gear 81 is the shaft 84 which carries a pin 85 which can be set in any desired position. Before the machineis started the dial plate is turned so that the zero thereon stands opposite the zero mark on the bracket 83 and the pin 85'is turned to point to any desired number on the dial. When the machine is started the gear, dial and the pin all turn together. A stationary contact 86 isprovided with which the pin 85 makes contact as it turns. The contact is suitably set so that the pin will reachit and make contact therewith when it points to the zero starting'point on the'bracket. The pin and ,zcontact then close an electric circuit which causes a bell to ring and this indicates to the operator that he should take his foot off the treadle and stop the rotation of the mandrel.

In Figure 5, I have shown a modified form of the mandrel in which the part-9O is grooved and the part 91 is provided with roove. The at 92, etc.,

a tongue to engage with the tongue is recessed as indicate I and the part 90 is provided with pins 93 on either side of which the tongue on the part 91 engages because of the recesses. It will 'be understood that the tongue-on the part 91 always remains in engagement with the groove on the part 90. It will also be seen that the recesses 92 are shaped so as to provide a cam on one side thereof and when the parts are in horizontal position or in line with the bearings as shown in Figure 2 the cam part of the slot 92, acting on the pins 93 will hold the parts 90. and 91 apart. hen the parts are swung to the dotted line position shown in Figure 2 the cam moves beyond the pin permitting the pin to sink deeper in the recesses and this in turn permits the two parts of the mandrel to be drawn together. It will also be noticed both in Figures 2 and 5 that the pivots of the two parts of the mandrel are out of line with each other in theslot in the block 29 and this causes the two parts of the mandrel to draw together at the right hand end as they are swun to the dotted line position, the link 33 drawing them together at the left hand end of Figure 2 and the cam slots 92 permitting them to draw together at the left-hand end in the, mandrel as shown in Figure 5.

It will also be understood that the mandrels can be removed from the machine for replacement so that. different sizes can be "fised. The mandrel is removed by unscrewing thebolt 95 which passes through hollow shaft 26 and engages the block carrying the forks 29 one ofwhich blocks is attached to each mandrel.

I claim:

1. In a winding machine, the combination of a hollow shaft, a mandrel havinga block on the end thereof, a bolt passing through the hollow shaft and threaded into the block on the mandrel by which the block is held firml against the'end of the hollow shaft.

2. In a winding machine, the combination of a block having a groove formed on the end thereof, two bars pivoted in said groove, the pivot centers being placed out of line with each othersothat one bar extends beyond the other, said bars being spaced apart by their pivots and being brought together by being swung sideways.

3. In a winding machine, the combination of amandrel composed of two bars spaced apart and ivotally connected together at both ends, t e pivots atone end being rigidly mounted and placed diagonally with reference to the horizontal axis of the mandrel.

Inn

4. In a winding machine, the combination of a mandrel com osed of two parallel bars spaced apart an pivotally connected together at both ends, the pivots at both ends being placed diagonally with reference to the horizontal axis of the mandrel.

5. In a winding machine, the combinationof a mandrel composed of two parallel bars spaced apart and pivotally connected to- 6. In a winding machine, the combination of a mandrel composed of two parallel bars spaced apart and pivotally connected together at both ends, the pivotsat both ends being placed diagonally with reference to the horizontal axisof the mandrel, the pivots at one end being placed in a fixed support which joins the-two ends together, the pivots 5 bars together b a parallel movement.

'7. In a winding machine, the combination of a mandrel comprising a block, mounted on an axis, two parallel barspivoted on the end thereof and extending parallel with the axis 10 thereof, means for holding them parallel to said axis, said means including a bearing that is in line with the axis of the block, and an extension on one of said bars in line with the axis of the mandrel, means for moving said bearing forward and back to engage with said extension and support it during the rotation of the mandrel.

8. In a Winding machine, the combination of a rotating block, a pair of arms pivoted on said rotating block, a link connecting said pair of arms to keep them parallel toeach other, a second block pivotally engaging one of said pair of arms and locking them, in a predetermined position with relation to each other and said pivot blocks. a

In testimony whereof I affix my signature.

LOUIS J. MARGHAND. 

